Siemens 3RT2026-1BB40 Three-Phase AC Contactor

Siemens 3RT2026-1BB40 is a three-pole Sirius power contactor designed for AC-3e/AC-3 duty, rated for 25 A and up to 11 kW at 400 V. The coil is a 24 V DC control coil, enabling compact, standard 24 V control logic in automation panels. It features screw-terminal connections and belongs to size S0, offering a compact form factor for panel mounting. The unit includes one auxiliary contact (1 NO + 1 NC), providing signaling or interlocking capabilities alongside the main switching poles. This 3RT2‑series device is intended to start and switch three-phase motors and other resistive/inductive loads in industrial applications, such as conveyors, pumps, and fans, within its 25 A/11 kW at 400 V rating. Designed for easy integration with PLCs and control circuits, its combination of robust mechanical construction, screw-term connections, and integrated auxiliary contact makes it a practical choice for compact control cabinets and automation hardware.